<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title></title>
<script src="./js/6-width.js"></script>
<style>
#div1 { background: red; width: 100px; height: 100px; padding: 10px; margin: 15px; border: 1px solid #000; }
</style>
</head>
<body>
<div id="div1" style="width: 120px;"></div>
</body>
</html>
